Index: sys/dev/usb/net/if_urndis.c
===================================================================
--- sys/dev/usb/net/if_urndis.c	(revision 320767)
+++ sys/dev/usb/net/if_urndis.c	(working copy)
@@ -245,6 +245,7 @@
 
 	mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
 
+retry:
 	/* scan the alternate settings looking for a valid one */
 	for (i = 0; i != 32; i++) {
 		error = usbd_set_alt_interface_index(uaa->device,
@@ -261,6 +262,10 @@
 			break;
 	}
 	if ((error != 0) || (i == 32)) {
+		if (iface_index[0] != iface_index[1]) {
+			iface_index[0] = iface_index[1];
+			goto retry;
+		}
 		device_printf(dev, "No valid alternate setting found\n");
 		goto detach;
 	}